What makes Alpine swift ascend at twilight? Novel geolocators reveal year-round flight behaviour

Meier, ChristophChristophMeierKaraardic, HakanHakanKaraardicAymi, RaülRaülAymiPeev, Strahil G.Strahil G.PeevBächler, ErichErichBächlerWeber, RogerRogerWeberWitvliet, WillemWillemWitvlietLiechti, FelixFelixLiechti2024-11-192024-11-1920181432-076210.24451/arbor.6778https://doi.org/10.24451/arbor.677810.1007/s00265-017-2438-6https://arbor.bfh.ch/handle/arbor/39781enWhat makes Alpine swift ascend at twilight? Novel geolocators reveal year-round flight behaviour-article